Because you like The Man with No Name in The Good, the Bad and the Ugly
Disgust is a friend who makes sure you stay away from all things gross. See them in Inside Out.
Although Theon Greyjoy is treated well, he's still essentially a hostage. And that isn't so easy for him to forgive. See them in Game of Thrones.
Carolos has perfect hair, a lab coat, and a constant readiness to do science. See them in Welcome to Night Vale.
Loyal to his family and associates and distrustful of anyone else, Tony Soprano is a good guy to have on your side. See them in The Sopranos.
Shawn Hunter may be a bit of a rebellious bad boy, but he has a heart that's pure gold. See them in Boy Meets World.
From secret organizations to alien attacks, Kyon's life has been one weird, unexplainable thing happening after another. See them in The Melancholy of Haruhi Suzumiya.
Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.
Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.
Leone Montana is a fearless hitman with a surprisingly sensitive side. See them in Leon: The Professional.
Milo Thatch is an enthusiastic researcher without cynicism. See them in Atlantis: The Lost Empire.
Philip J. Fry accidentally cryogenically froze himself for a millennium. See them in Futurama.